<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <el-form
        ref="loginForm"
        label-width="0"
        :rules="logincheckrules"
        :model="loginform"
        class="login_form"
      >
        <el-form-item prop="username">
          <el-input
            v-model="loginform.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="loginform.password"
            type="password"
            prefix-icon="iconfont icon-password"
          ></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      loginform: {
        username: '',
        password: ''
      },
      logincheckrules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 20,
            message: '长度在 3 到 20 个字符',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 20,
            message: '长度在 6 到 20 个字符',
            trigger: 'blur'
          }
        ]
      }
    }
  },
  methods: {
    // 点击重置
    resetLoginForm () {
      this.$refs.loginForm.resetFields()
    },
    // 登录
    login () {
      this.$refs.loginForm.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginform)
        if (res.meta.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #cccccc;
  height: 100%;
}
.login_box {
  position: absolute;
  width: 400px;
  height: 280px;
  background-color: #fff;
  border-radius: 5px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  height: 110px;
  width: 110px;
  border-radius: 50%;
  border: 1px solid #eee;
  background: #fff;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  overflow: hidden;
  img {
    height: 110px;
    width: 110px;
    border-radius: 50%;
    background-color: #eee;
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  box-sizing: border-box;
  width: 100%;
  padding: 0 30px;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
